Stand in a defective turret detector

Take GLaDOS' escape advice

Score off the post or cross bar in a match

Complete the first Thermal Discouragement Beam test

Survive the manual override

Prepare a big meal using an improvised electric stove

Perform 50% of the Single Player Skillshots

Tidy up the back yard

Cause major destruction

Use your biggest weapon

Kill all enemies without leaving the dance floor in the city outskirts

Perform 10 different Single Player Skillshots